From the YOUCAT, no. 218:
Because God is truly present in the sonsecrated species of bread and wine, we must preserve the sacred gifts with the greatest reverence and worship our Lord and Redeemer in the Most Blessed Sacrament.
If there are consecrated hosts left over after the celebration of Holy Eucharist, they are kept in sacred vessels in the tabernacle. Since the Most Blessed Sacrament is present in them, the tabernacle is one of the most venerable places in the church. We genuflect before any tabernacle. Certainly, anyone who is really following Christ will recognize hi in the poorest of the poor and serve him in them. But he will also also find time to spend in adoration before the tabernacle and offer his love to our Eucharistic Lord.
From an article by Father Tommy Lane:
In a book entitled Healing Through the Mass (pages 84-85, published by Resurrection Press and authored by Fr Robert DeGrandis S.S.J.), I read the following: NASA did some experimenting with a special type of camera that could see the energy levels in the human body. This is then seen on a monitor. This energy shows up as an aura around the body. NASA’s interest in the experiment was to investigate the effects of space travel on astronauts in orbit.
Experimenting in a hospital they discovered that when a person is dying, the aura around the body is thinner and gets thinner and thinner until the person dies. The scientist carrying out this investigation in the hospital and his associate were behind a two-way mirror. They could see with their camera another man coming into the room with light coming from his pocket. Then the man took the object from his pocket and did something so that in the camera the whole room was filled with light and with their camera they could no longer see what was happening. They ran to the room to see what was causing so much light to appear in their camera. They discovered that the dying man was being given Holy Communion. Afterwards with their camera they could see that the aura around him was brighter. Although in his fifties, the scientist conducting the experiment decided to become a priest after witnessing that.
— St. Maximilian Kolbe
— Blessed Teresa of Calcutta